<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="用户名" prop="userid">
        <el-select
          v-model="queryParams.userid"
          placeholder="请选择用户"
          clearable
          style="width: 240px"
        >
          <el-option
            v-for="item in useridList"
            :key="item.userId"
            :label="item.userName"
            :value="item.userId"
          />
        </el-select>
      </el-form-item>
      <!-- <el-form-item label="标题" prop="title">
        <el-input
          v-model="queryParams.title"
          placeholder="请输入标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="点赞数" prop="likescount">
        <el-input
          v-model="queryParams.likescount"
          placeholder="请输入点赞数"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item> -->
      <el-form-item label="课程" prop="subject">
        <el-select
          v-model="queryParams.subject"
          placeholder="请选择课程"
          clearable
          style="width: 240px"
        >
          <el-option
            v-for="item in courseList"
            :key="item.course"
            :label="item.coursename"
            :value="item.coursename"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['discuss:bigtopic:add']"
        >新增
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['discuss:bigtopic:edit']"
        >修改
        </el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['discuss:bigtopic:remove']"
        >删除
        </el-button>
        <!-- <el-button
          size="mini"
          type="text"
          @click="addLike(scope.row)"
        >点赞
        </el-button> -->
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['discuss:bigtopic:export']"
        >导出
        </el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="bigtopicList" @selection-change="handleSelectionChange" :row-class-name="tableRowClassName">
      <el-table-column type="selection" width="55" align="center"/>
      <el-table-column label="话题ID" align="center" prop="topicid"/>
      <el-table-column label="用户ID" align="center" prop="userid"/>
      <el-table-column label="标题" align="center" prop="title"/>
      <el-table-column label="内容" align="center" prop="content"/>
      <el-table-column label="点赞数" align="center" prop="likescount"/>
      <el-table-column label="课程" align="center" prop="subject"/>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="primary"
            plain
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['discuss:bigtopic:edit']"
          >修改
          </el-button>
          <el-button
            size="mini"
            type="danger"
            plain
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['discuss:bigtopic:remove']"
          >删除
          </el-button>
          <el-button
            size="mini"
            type="success"
            plain
            @click="addLike(scope.row)"
          >点赞
          </el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改话题对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="1000px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="用户ID" prop="userid">
          <el-select
            v-model="form.userid"
            placeholder="请选择用户"
            clearable
            style="width: 240px"
          >
            <el-option
              v-for="item in useridList"
              :key="item.userId"
              :label="item.userName"
              :value="item.userId"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="标题" prop="title">
          <el-input v-model="form.title" placeholder="请输入标题"/>
        </el-form-item>
        <el-form-item label="内容">
          <editor v-model="form.content" :min-height="192"/>
        </el-form-item>
        <el-form-item label="点赞数" prop="likescount">
          <el-input v-model="form.likescount" placeholder="请输入点赞数"/>
        </el-form-item>
        <el-form-item label="课程" prop="subject">
          <el-select
            v-model="form.subject"
            placeholder="请选择课程"
            clearable
            style="width: 240px"
          >
            <el-option
              v-for="item in courseList"
              :key="item.course"
              :label="item.coursename"
              :value="item.coursename"
            />
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<style>

  .el-table .success-row {
    background: #f0f9eb;
  }
</style>

<script>
import {listBigtopic, getBigtopic, delBigtopic, addBigtopic, updateBigtopic, addPoint} from "@/api/discuss/bigtopic";
import {listBigcourse} from "@/api/discuss/bigcourse";
import {listUser} from "@/api/discuss/user";

export default {
  name: "Bigtopic",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 话题表格数据
      bigtopicList: [],
      //课程数据
      courseList: [],
      //用户数据
      useridList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        userid: null,
        title: null,
        content: null,
        likescount: null,
        subject: null
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        userid: [
          {required: true, message: "用户ID不能为空", trigger: "blur"}
        ],
      },
      queryParamsUser:{
        status:0
      }
    };
  },
  created() {
    this.getList();
    this.getCourseList();
    this.getUserList();
  },
  methods: {
    tableRowClassName({row, rowIndex}) {
      if (rowIndex % 2 == 0) {
          return 'success-row';
        }
        return '';
      },
    /** 点赞*/
    addLike(row) {
      // console.log(row)
      // row.likescount = row.likescount + 1
      // console.log(row)
      addPoint(row).then(response => {
        this.$modal.msgSuccess("点赞成功");
        this.open = false;
        this.getList();
      })
    },
    /** 查询话题列表 */
    getList() {
      this.loading = true;
      listBigtopic(this.queryParams).then(response => {
        this.bigtopicList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    /** 查询课程列表 */
    getCourseList() {
      listBigcourse().then(response => {
        this.courseList = response.rows;
      });
    },
    /** 查询用户列表 */
    getUserList() {
      listUser(this.queryParamsUser).then(response => {
        this.useridList = response.rows;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        topicid: null,
        userid: null,
        title: null,
        content: null,
        likescount: 0,
        subject: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.topicid)
      this.single = selection.length !== 1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加话题";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const topicid = row.topicid || this.ids
      getBigtopic(topicid).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改话题";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.topicid != null) {
            updateBigtopic(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addBigtopic(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const topicids = row.topicid || this.ids;
      this.$modal.confirm('是否确认删除话题编号为"' + topicids + '"的数据项？').then(function () {
        return delBigtopic(topicids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {
      });
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('discuss/bigtopic/export', {
        ...this.queryParams
      }, `bigtopic_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>
